/Engine/Source/Runtime/GeometryCore/Public/Implicit/SparseNarrowBandMeshSDF.h
Sparse grid that stores array of TriIDs each blocks.
struct FTriIDBlockGrid : public [UE::Geometry::TBlockedGrid3Layout< FBlockedGrid3f::BlockSize >](API\Runtime\GeometryCore\Spatial\TBlockedGrid3Layout)
TArray< std::at...
PerBlockNum
TArray<TArray<...
TrisInBlock